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ONTAP pre-update check: Openssh 7.2 upgrade Warning: "hmac-ripemd160" and precheck "hmac-ripemd160-etm" are considered weak

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ontap-9
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Applies to

  • ONTAP 9.1 and later
  • Upgrading from 9.1 to 9.2 and later

Issue

While performing the ONTAP upgrade pre-check  command cluster image validate -version  you receive the following pre-check Warning:
 
Pre-update Check      Status     Error-Action
--------------------- ---------- --------------------------------------------
Openssh 7.2 upgrade   Warning    Warning: "hmac-ripemd160" and
precheck                         "hmac-ripemd160-etm" are considered weak
                                 keyed-hash message authentication code
                                 (HMAC) algorithms and support for the same
                                 will be removed after upgrading to Data
                                 ONTAP 9.3.
                                 Action: Before retrying the upgrade, remove
                                 the above weak algorithms using "security
                                 ssh remove" command. To list all Vservers
                                 configured with one or both the above HMAC
                                 algorithms, run "security ssh show
                                 -mac-algorithms hmac-ripemd160* -vserver * -fields vserver"
 

 

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